check if an array is equispaced
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Mireia Boneta Camí
le 12 Oct 2020
Modifié(e) : Stephen23
le 12 Oct 2020
I am given a vector of numbers and I have to check if this vector has its samples equispaced or not. How can I do it without using fors?
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Ameer Hamza
le 12 Oct 2020
Modifié(e) : Ameer Hamza
le 12 Oct 2020
Something like this
x = [1 2 3];
dx = diff(x);
is_equidistant = all(dx==dx(1));
Result
>> is_equidistant
is_equidistant =
logical
1
If
x = [1 2 5];
dx = diff(x);
is_equidistant = all(dx==dx(1));
Result
>> is_equidistant
is_equidistant =
logical
0
If you want to check it with a tolerance value
x = [1 2 3.00000000000001];
dx = diff(x);
is_equidistant = all(ismembertol(dx, dx(1)));
Result
>> is_equidistant
is_equidistant =
logical
1
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